Trane TCONT401AN21MA Thermostat User Manual

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XR401  
Comfort  
Control  
TCONT401AN21MA  
Comfort Control  
Owner’s Manual  
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Fan  
Mode  
Filter/OD  
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Page  
3
4-11  
Table Of  
Contents  
Introduction  
Keypad functions  
12-16 Features  
17  
Factory settings  
Up Arrow - Increase  
temperature Page 5.  
18-19 Comfort Control Setup  
20-21 Troubleshooting  
22-23 Warranty  
Comfort  
Information  
Drawer Page 16.  
$
Down Arrow - Decrease  
temperature Page 5.  
Fan  
Mode  
Filter/OD  
Mode: Cool, Heat,  
Auto, Off, EMHeat  
Page 4.  
Energy Savings  
Page 10.  
Fan ON / AUTO  
Page 6.  
Filter Reminder /  
Outdoor Temperature  
Page 7.  
Page - 2  
Pub. No. 22-5206-01  
Some states do not allow limitations on how long an implied warranty last or do not  
allow the exclusion or limitation of incidental or consequential damages, so the above  
limitation may not apply to you. This warranty gives you specific legal rights, and you  
may also have other rights which vary from state to state.  
Parts will be provided by our factory organization or an authorized service organization in  
your area. All you need to do is look us up in the Yellow Pages or write to the address  
given below. If you wish further help or information concerning this warranty, contact:  
Trane  
Troup Highway  
Tyler, Texas 75711-9010  
Attention: Manager, After Sale Support  
Page - 23  
Pub. No. 22-5206-01  
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Warranty  
Limited Warranty  
Low Voltage Comfort Control  
This warranty is extended by Trane to the original purchaser and to any succeeding owner  
of the real property to which the Comfort Control is originally affixed, and applies to  
products purchased and retained for use within the U.S.A. and Canada.  
If any part of your Comfort Control fails because of a manufacturing defect within 5  
years from the date of the original purchase, Warrantor will furnish, without charge, a  
new Comfort Control. Any local transportation, related service labor and diagnosis  
calls are not included.  
This Warranty does not cover failure of your Comfort Control if it is damaged while in  
your possession or if the failure is caused by unreasonable use. In no event shall Warran-  
tor be liable for incedental or consequential damages. In no event shall any implied  
warranty of merchandise or fitness for use exceed the terms of the limited warranty  
stated above.  
Page - 22  
Pub. No. 22-5206-01  
Introduction  
Congratulations on the purchase of your new Trane XR401 Comfort Control! Your  
XR401 Comfort Control combines the latest digital control technology with intuitive  
functions that make this control simple to understand and easy to operate. You’ll enjoy  
lower utility bills at the touch of a button with the energy efficiency features built into  
your XR401 Comfort Control. Your comfort settings are automatically stored in the  
XR401 Comfort Control’s memory eliminating the need for battery backup in the event of  
power loss. Simply follow the steps in this instruction manual and begin enjoying the  
benefits of your new Trane XR401 Comfort Control.  
Page - 3  
Pub. No. 22-5206-01  
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Keypad  
MODE  
Functions  
Mode - Pressing this key changes the system mode to Heat, Emergency Heat, Cool,  
Automatic or Off. NOTE: Emergency Heat available only on Heat Pump  
applications.  
A border will appear around the mode on the display  
to show the system mode you’ve selected.  
Mode  
Page - 4  
Pub. No. 22-5206-01  
Table 2  
Troubleshooting  
(Continued)  
Symptom  
Possible Cause  
Action  
1. System Mode not set to Heat.  
1. Set Mode to heat and raise the setpoint above room temperature.  
2. If heating does not come on within 5 minutes, Check Heating.  
3. Check - Repair connections.  
2. Minimum off time delay being enforced. "waiting displayed".  
3. Loose connection to control or system.  
4. Heating system requires service or  
Heating will not come  
on.  
4. Repair system / Replace control.  
control requires replacement.  
1. System Mode not set to Cool.  
1. Set Mode to cool and lower the setpoint below room temperature.  
2. If cooling does not come on within 15 minutes, contact servicer.  
3. Repair connections.  
2. Minimum off time delay being enforced "waiting displayed".  
3. Loose connection to control or system.  
4. Cooling system requires service or  
control requires replacement.  
Cooling will not come  
on.  
4. Repair system / Replace control.  
Cool ON or Heat ON  
is displayed, but no  
warm or cool air is  
coming from the  
registers.  
1. The heating equipment turns on the  
fan when the furnace has warmed up to a  
setpoint.  
2. Heating or cooling equipment is not  
operating.  
1. Wait one minute after seeing the ON icon and then check the registers.  
2. Check Heating and Cooling system.  
Control does not  
respond to keypad  
presses.  
1. Unlock keypad - press Up+Down arrow together until "Keypad Locked"  
disappears.  
2. Replace Control.  
1. "Keypad locked" icon is displayed on LCD.  
2. Keypad failure.  
Fan does not operate  
properly in heat or  
cool mode.  
1. Incorrect wiring.  
2. Heating or cooling equipment inoperative.  
1. Correct wiring.  
2. Repair system.  
1. Fan mode set to ON.  
2. Shorted control wiring.  
1. Set fan mode to AUTO.  
2. Check / Repair wiring.  
Fan runs all the time.  
Page - 21  
Pub. No. 22-5206-01  
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Table 2  
Troubleshooting  
Trouble  
-shooting  
Symptom  
Possible Cause  
Action  
1. Blown fuse or tripped circuit breaker.  
2. Furnace power switch OFF.  
3. Furnace blower compartment door or panel  
loose or not properly installed.  
1. Replace fuse or reset breaker.  
2. Turn switch to ON.  
3. Replace door panel in proper position to engage safety interlock or  
door switch.  
Display will not come on.  
Temperature display is incorrect.  
Temperature display needs calibration.  
Calibrate Sensor - User Setup Step 49.  
Temperature display needs calibration.  
1. Calibrate Sensor - User Setup Step 50.  
2. Disconnect sensor and check circuit resistance value - Table 4.  
3. Relocate outdoor sensor.  
Outdoor temperature display is  
incorrect.  
Outdoor sensor located in poor sensing location.  
Cannot set Heating setpoint  
above 80 degrees  
Deadband between Heating and Cooling set to high  
Control EEPROM write error.  
Decrease Deadband setting - User Setup Step 42.  
Press any key and Check / Re-enter Setup Choices.  
Replace Control  
"Service" Flashing on and off.  
"Service" solid on and "--" in  
temperature display.  
Indoor temperature sensor open or shorted  
Outdoor temperature sensor open or shorted  
Outdoor temperature display  
shows "--" and Service indicator  
on solid.  
1. Check outdoor sensor wiring.  
2. Replace outdoor sensor.  
1. Upper and/or lower temperature limits were  
reached.  
1. Check the temperature setpoints:  
Heating limits are 40 - 85F.  
Cooling limits are 65 - 90F.  
2. Unlock keypad - press Up+Down arrow together until icon disappears.  
Temperature setting will not  
change. (Example: Cannot set  
heating higher or cooling lower).  
Page - 20  
Pub. No. 22-5206-01  
2. "Keypad locked" is displayed on LCD.  
UP / DOWN Arrow  
- Use these keys to raise or lower the Heat or Cool Setting.  
- The first key press turns on the back lighting and a border around the setting to be  
adjusted without changing the setting.  
- Pressing the Up or Down arrow again will raise or  
lower the setting that has the border around it.  
- If you press and hold the Up or Down arrow, the temperature setting will advance  
rapidly.  
- When the control is set to Auto mode, pressing the Mode key once changes the position  
of the border to heat or cool.  
Page - 5  
Pub. No. 22-5206-01  
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Keypad  
FAN  
Functions  
- Pressing this key selects whether the indoor fan motor runs in automatic or  
continuous mode.  
Fan  
(cont-)  
The FAN ON indicates that you have selected to  
operate the fan in continuous mode.  
Pressing the Fan keypad button again returns the  
indoor fan mode of operation to automatic and FAN  
ON goes away.  
Fan  
Page - 6  
Pub. No. 22-5206-01  
User  
Table 1  
Comfort Control Setup  
Setup  
Step  
Factory  
Setting  
Setting (Choices)  
(Press UP or DOWN arrow)  
(Press  
Mode or  
Fan)  
Factory  
Setting  
Setting (Choices)  
(Press UP or DOWN arrow)  
Step  
Menu Item  
Menu Item  
(Press Mode or Fan)  
Options  
Energy Savings -  
Heating Setpoint  
Offset  
Temperature  
Display  
0 = Fahrenheit  
1 = Celcius  
1 - 45 Degrees Fahrenheit  
1 - 25 Degrees Celcius  
0
40  
5
46  
(cont-)  
Auto or Manual  
Changeover  
0 = Manual  
1 = Auto  
Indoor Filter Timer  
Method  
0 = Calendar Days  
1 = Fan Run Time Days  
1
3
41  
42  
0
47  
48  
Indoor Filter  
Reminder - Days  
1 - 180 Days  
0 = Disable  
Setpoint Deadband  
Waiting Icon  
2 - 10 Degrees  
30  
Calibrated Room Temperature  
+ / - 5 Degrees (1/2 degree  
increments)  
0 = Disable  
1 = Enable  
Calibrate Indoor  
Temperature  
1
1
5
43  
44  
45  
0
0
49  
50  
0 = Off  
Calibrated Outdoor Temperature  
+ / - 5 Degrees (1/2 degree  
increments)  
Calibrate Outdoor  
Temperature  
Cooling Droop  
1 = 1 Degree  
2 = 2 Degrees  
Energy Savings -  
Cooling Setpoint  
Offset  
SA = Save  
US = Default User Settings  
CA = Cancel  
1 - 25 Degrees Fahrenheit  
1 - 15 Degrees Celcius  
Exit Setup  
(Press Mode)  
99  
(Exit)  
SA  
Note: Pressing the Energy Savings Key ($) anytime during setup will advance to step 99.  
Step 99 - Make setting selection and then press MODE to exit.  
SAve = Save selections  
USer = Default user settings  
CAncel = Cancel Selections for current session and return to previous session selections.  
Lock - Unlock Keypad:  
Press and hold Up Arrow and Down Arrow at the same time for several seconds.  
(“Keypad Locked” icon will display on LCD screen)  
Page - 19  
Pub. No. 22-5206-01  
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User  
Setup  
Entering User Setup:  
Press and hold the MODE and FAN keypad buttons at the same time.  
Options  
Keypad Navigation:  
- Use the MODE or FAN buttons to navigate forward and backward through the Setup steps.  
- Press MODE to advance forward to the next step.  
- Press FAN to return to the previous step.  
- Use the UP and DOWN arrow keypad buttons to select or change Setup options.  
Page - 18  
Pub. No. 22-5206-01  
FILTER/OD  
Filter/OD - When the optional outdoor sensor is installed, outdoor temperature can be  
viewed on the Comfort Control’s display by simply pressing the “FILTER/OD”  
key.  
Filter/OD  
Page - 7  
Pub. No. 22-5206-01  
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Keypad  
FILTER/OD  
- Press this key twice to display how many days remain before time to replace or  
Functions  
Filter/OD  
(cont-)  
clean the filter. The “FILTER/OD” indicator will flash on the display when the  
filter timers days remaining reaches zero.  
Filter/OD  
- Press the “FILTER/OD” key twice after cleaning or  
replacing the filter to turn off the filter indicator and  
reset the timer.  
- If the filter is serviced before the timer expires, press the “FILTER/OD” key twice to  
display the “days remaining for filter”. Press the Down arrow to change the remaining  
days to zero. Press the “FILTER/OD” key twice to reset the timer.  
Page - 8  
Pub. No. 22-5206-01  
Factory  
Default  
Settings  
User Defined Options and Factory Default Settings: (See Table 1, page 19)  
Temperature Display - Fahrenheit or Celsius (Default is Fahrenheit)  
Auto or Manual Changeover - (Default is Auto)  
Setpoint Deadband - 2 - 10 degrees (Default is 3 degrees)  
Waiting Indicator - Enable or Disable (Default is Enable)  
Cooling Droop - Off, 1, or 2 degrees (Default is 1 degree)  
Energy Saving Cooling Setpoint Offset - 0 - 25 degrees (Default is 5 degrees)  
Energy Saving Heating Setpoint Offset - 0 - 45 degrees (Default is 5 degrees)  
Indoor Filter Timer Method - Calendar Days or Fan Run Time Days - (Default is Calendar Days)  
Indoor Filter Timer Days - 1 - 180 days (Default is 30 days)  
Calibrate Indoor Temperature - + / - 5 Degrees (Default is 0 degrees)  
Calibrate Outdoor Temperature - + / - 5 Degrees (Default is 0 degrees)  
Page - 17  
Pub. No. 22-5206-01  
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Calibrate Outdoor Temperature  
Features  
This option allows calibration (or deliberate miscalibration) of the outdoor temperature  
sensor. The selected number is number of degrees, plus or minus, which will be added to  
actual temperature. The number can range between + 5 and - 5 degrees in 1/2 degree incre-  
ments. Factory default is 0. This adjusted value will be used and displayed as actual tempera-  
ture. For example, if 2 is selected, 72 degrees actual will read 74 degrees.  
(cont-)  
Comfort Information Drawer  
The drawer attached to the mounting base of the control is designed to provide a convenient  
location for the user to locate their local servicer. A standard business card can be folded and  
inserted into the slot on the drawer to remind the User whom to call when service is re-  
quired.  
Page - 16  
Pub. No. 22-5206-01  
FILTER/OD  
Filter/OD - If you press and hold the filter/OD keypad button for several seconds, the display  
changes to the Quick Setup option for the filter timer. Use the UP or DOWN  
arrow keypad buttons to change the timer setting if desired, 1 - 180 days.  
NOTE: Setting to 0 will disable filter timer.  
Filter/OD  
- Press the filter/OD button again to return to normal  
display or just wait a few seconds and the display will  
return on its own.  
Page - 9  
Pub. No. 22-5206-01  
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Keypad  
Energy Savings  
- Use this key to lower your systems energy consumption and save money at the  
Functions  
(cont-)  
$
same time! Pressing the Energy Savings keypad button changes the indoor tempera-  
ture setting to a warmer temperature when the system is operating in the cooling  
mode and to a cooler indoor temperature setting when operating in the heating  
mode. Energy Savings will appear on the display.  
$
Example: Heating offset of 8 degrees.  
Page - 10  
Pub. No. 22-5206-01  
Service Indicator  
“SERVICE” automatically flashes when an internal fault or error has been detected by the  
control. See Table 2 on pages 20 & 21.  
Wait Indicator  
“WAITING” will illuminate when the indoor setpoint is moved in the direction of calling  
for additional system capacity. “WAITING” indicates that the control is adjusting to the new  
settings.  
Calibrate Indoor Temperature  
This option allows calibration (or deliberate miscalibration) of the room temperature sensor.  
The selection is the number of degrees added to actual temperature. The number can range  
between + 5 and - 5. Factory default is 0. This adjusted value will be used as actual tempera-  
ture for both display and control action. For example, if 2 is selected, 72 degrees actual will  
read 74 degrees.  
Page - 15  
Pub. No. 22-5206-01  
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Filter Reminder  
Features  
“FILTER/OD” will automatically flash to remind the homeowner that its time to change the  
filter once the preset time has expired. Pressing the “FILTER/OD” keypad button automati-  
cally resets the internal clock timer. Once the timer has been reset, the number of days  
remaining till the next filter change can easily be determined by simply pressing the “FIL-  
TER/OD” keypad button. Pressing and holding the “FILTER/OD” keypad button provides  
quick access to the filter timer setup.  
(cont-)  
Energy Savings  
The Energy Savings mode can provide energy savings by offsetting the indoor setpoint to a  
cooler temperature setting for heating and a warmer temperature setting for cooling. The  
Energy Savings mode is activated by pressing the Energy Savings key “$” on the control  
keypad. Pressing the Energy Savings key “$” again deactivates the Energy Savings mode.  
Pressing and holding the Energy Savings key “$” provides quick access to the offset degree  
setup for the current operating mode.  
Default Factory Settings  
The control is shipped with a set of factory default settings. The factory default settings can  
be restored at any time using the control configuration menu. Please see Page 17 for a com-  
plete listing of factory shipped default settings.  
Page - 14  
Pub. No. 22-5206-01  
- Press and hold the Energy Savings keypad button to  
gain Quick Access to the Energy Savings setup screen.  
- Use the UP or DOWN arrow keys to change the  
offset degrees setting.  
$
NOTE: Energy Savings offset degrees are selected separately for heating and cooling.  
Press the Mode keypad button while viewing this screen to access the Cooling or Heat-  
ing offset degrees setting, then use the UP or DOWN arrow key to select the desired  
number of offset degrees.  
- Press the Energy Savings keypad button again to return to normal display or just wait a  
few seconds and the display will return on its own.  
Page - 11  
Pub. No. 22-5206-01  
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Auto Changeover  
When the system mode is set to Auto, the control automatically switches between heating and  
cooling modes to maintain the desired comfort level.  
Features  
Appears when  
equipment is  
energized.  
Adjusting to  
new setting  
Setpoint Deadband  
The number of degrees separating Heating and Cooling setpoints. Neither the heating or  
cooling system operate when the indoor temperature is within the deadband. The amount of  
separation between mode setpoints is user defined between 2 and 10 degrees. When the  
control is set to Auto, and the cooling setpoint is changed to a cooler setting, the heating  
setpoint also changes to maintain the selected degrees separation.The same action occurs  
when the heating setpoint is changed to a warmer temperature.  
Outdoor Temperature Display - (optional sensor must be installed)  
View outdoor temperature from within the conditioned space by pressing the Filter/OD  
keypad button. The Comfort Control’s display will return to normal display on its own  
within a few seconds.  
Page - 12  
Pub. No. 22-5206-01  
Backlit Display & Keys  
The liquid crystal display and keypad will illuminate whenever a keypad button is pressed to  
improve thermostat visibility. The back light stays on for 10 seconds after the last key press.  
The Up and Down arrows are continuously lit.  
Cooling Droop  
Cooling Droop is an automatic function that cycles the compressor on to improve indoor  
comfort by removing moisture from the air. The Droop cycle is activated when space tem-  
perature is at or below the cooling sensible temperature setpoint. When this function is  
active, the control will control indoor temperature at 1 or 2 degrees below cooling setpoint.  
The Droop cycle is deactivated when the indoor temperature rises above the cooling  
setpoint.  
Keypad Lock  
Locking the control keypad can help prevent unwanted tampering or changing the control  
settings by pressing the controls UP and DOWN arrow keypad buttons at the same time and  
holding for 2 seconds. The “KEYPAD LOCKED” icon will appear on the control’s display.  
Repeating this combination unlocks the keypad.  
Page - 13  
Pub. No. 22-5206-01  

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